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Science

Two astronauts who flew farther than anyone before are taking new NASA roles

Artemis II astronauts Victor Glover and Reid Wiseman are transitioning to emeritus status at NASA after their historic journey around the Moon earlier this year. The pair will continue advising and mentoring NASA teams as preparations accelerate for Artemis III and future lunar missions. Their experience with Orion and deep-space operations could prove especially valuable as NASA works toward returning astronauts to the lunar surface.

That fresh cleaning smell could be filling your home with nanoparticles

Researchers found that scented cleaners can react with ozone indoors to create billions or trillions of invisible nanoparticles that can penetrate deep into the lungs. The pollution forms within minutes and, in some cases, may produce an inhaled particle dose comparable to or greater than standing near heavy traffic.

Scientists may have misread a 2-billion-year-old clue about Earth

Scientists have found that a famous 2-billion-year-old chemical signature, once thought to record a massive global change in Earth’s carbon cycle, may instead have been produced by local magma, hydrocarbons, and methane-eating microbes. The discovery raises new questions about what was really happening as oxygen transformed the young planet.

REM sleep paradox: Dreaming may drain the brain’s energy even as fuel supply rises

Scientists discovered a surprising energy paradox in the brain during REM sleep, the stage most closely associated with dreaming. Blood supply to the brain begins increasing even before REM starts, but neurons’ immediately available energy, measured as ATP, then drops. The finding suggests that dreaming may require such intense internal processing that neurons consume energy faster than it can be replenished.

Zepbound and Mounjaro may turn on the body’s calorie-burning brown fat

Tirzepatide, sold as Mounjaro and Zepbound, activated calorie-burning brown fat in obese mice, revealing a potential metabolic effect beyond appetite suppression. If confirmed in humans, the finding could help explain the drug’s powerful benefits and inspire more comprehensive treatments for obesity and diabetes.

APOD: 2026 September 26 – Mirrored Meteor and Milky Way

APOD Science APOD APOD: 2026 September 26 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Mirrored Meteor and […]

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NASA, Boeing to Provide Update on Starliner Development

During a news conference at 3 p.m. EDT on Monday, Sept. 28, NASA and Boeing leadership will discuss Starliner’s development and plans for regular crew flights to and from the International Space Station. Learn where to watch online: https://www.nasa.gov/live The briefing participants include: Media already credentialed for Crew-13 may participate in person at NASA’s Kennedy […]

NASA Tests Dual Mode Propulsion CubeSat Ahead of Launch

Spacecraft propulsion traditionally relies on volatile fuels and separate, bulky systems for different types of maneuvering in space. NASA is working to change that paradigm. Engineers at NASA’s Marshall Space Flight Center in Huntsville, Alabama, recently completed a rigorous series of environmental and physical tests on a new small satellite designed to make spaceflight safer […]

NASA Welcomes San Marino Signing the Artemis Accords

The Republic of San Marino became the 76th signatory to the Artemis Accords during a ceremony in the city of Rimini on Friday with NASA and U.S. Department of State officials present. “San Marino joins a growing coalition of like-minded nations committed to the peaceful, transparent, and responsible exploration of space,” said NASA Deputy Administrator […]

2026-2027 DWU: High School Engineering Challenge

2026-2027 DWU: High School Engineering Challenge Challenge Materials Overview The 2026-2027 challenge theme is, “Fueling Flight Design Challenge: New Energy Systems.” As more and more aircraft are a part of the US’ National Airspace System (NAS), NASA and partners at the FAA, at universities, and in the aviation industry are searching for ways to increase safety, […]

2026-2027 DWU: Middle School Design Challenge

2026-2027 DWU: Middle School Design Challenge Overview The 2026-2027 challenge theme is, “Fueling Flight Design Challenge: New Energy Systems.” As more and more aircraft are a part of the US’ National Airspace System (NAS), NASA and partners at the FAA, at universities, and in the aviation industry are searching for ways to increase safety, make […]

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TB 26-07 Aluminum Alloy 2219 Material Guidance

For more information, contact Donald S. Parker, Kennedy Space Center, donald.s.parker@nasa.gov Download the PDF version Improper casting and forging processes in the manufacture of aluminum alloy 2219 can lead to microstructural defects that result in a sub-optimal response to anodic surface treatments and an increase in corrosion susceptibility. This Technical Bulletin communicates the risks of […]

Hubble Spots Chaotic Secret in Galaxy

A chaotic secret hides within this seemingly serene image of spiral galaxy NGC 4698 taken by NASA’s Hubble Space Telescope and released on Sept. 18, 2026. As a spiral galaxy like our own Milky Way galaxy, NGC 4698 has spiral arms that curl around within a thin disk of stars, gas, and dust. These arms […]